My computer is alright for gaming but if i had a better graphics card it would be so much better. i dont know how to install one or what I should buy/ or even how to install it. ( shouldn't be too hard to install) but I need help finding out which ones are compatible with my system. I know nothing about building computers or what will work.

How much you want to spend on a card?
If your power supply is really 200 watts, you'll need to upgrade, 500-600w should be a minimum.
make sure to check the size of the card, might be thight in that case.

Idk but Im Looking to get a Geforce 9800GT Eco Edition(Tuned Down 9800GT without 6Pin Power connecter but can be overclocked back to original settings) My GPU is 365 Max and i heard/seen people use this card on 250-300w without any problems

You can build a decent gaming computer for 400-500$, I mean it depends on you budget, You can get a decent PSU and a decent GPU for around 200
I see many cards on ebay from around 50-130 decent ATI and Nvidia
for my Preferance im getting the PNY 9800GT EE for decent gaming but

you got 2 main problem with the upgrade path of your desktop and both are caused by the computer case. It's a small form factor (SFF), you can't fit traditional psu and not any gpu as well (don't worry about the 200$ one, they'll never fit)

the other option would be to find an atx case with a normal psu, from there you can spend anything you want on your next gpu. this way is interesting, if you're interested in desktop gaming, you can spend like 125-170 on a gpu that will last and in a year or two you can upgrade your cpu/ram/mobo and keep the the case, psu, gpu and the drives.

Also, about minecraft, you say you want fps higher than 60-70? that would be a waste as most monitors today have a refresh rate of 60hz, any frame rendered over that aren't displayed, if you're experiencing screen tearing while playing minecraft, just enable vertical sync.

it's low profile gpu, and very low on watt consumption.
I don't think you even need to replace your psu as well.
it performs like my old HD4670, and tbh it's a bit better since it also support latest dx11.

it's low profile gpu, and very low on watt consumption.
I don't think you even need to replace your psu as well.
it performs like my old HD4670, and tbh it's a bit better since it also support latest dx11.

I am using it.
You can believe other people review (considering their opinion about Tier 3 GPU is always bad for gaming) or me that been using it to play various games on steam.
it's been like that eversince the first Riva TNT vs RivaTNT2 vs Riva TNT vanta, Geforce 256 vs Geforce 2MX vs Geforce 2

they test it based on benchmark, I was a computer hardware reviewer that's what I do
Low number = bad

marcus134 and LockeCole_101629 know what they're talking about, listen to them. Your computer cannot take most cards, including the GTX 560 you were just suggested. You are VERY limited, and it'd be better to just get a new computer so you'd be able to pack in a lot more power.